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CVE-2026-101911— ip-address: Address6 builds a parse diagnostic proportional to the input with no length bound, allowing a single long string to stall or crash the process

Quick assessment

Affected
beaugunderson ip-address
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

ip-address 是一个用于在 JavaScript 中解析和操作 IPv4 和 IPv6 地址的库。在版本 10.7.1 之前， 构造函数、 方法以及 中的解析代码会接受无长度限制的字符串，并将包含无效字符的字符串通过 正则表达式匹配后，展开为巨大的诊断输出。只有当应用程序接收非常大型的、由攻击者控制的字段，并在将其传递给 解析之前未施加长度限制时，才会产生实质性影响。 通常情况下，URL 和 HTTP 头部的长度限制，以及常见 body-parser 的默认配置，会对该漏洞的影响范围起到约束作用；常见的默认

CVSS 6.3 · Medium

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking

Affected Version Matrix 1

VendorProduct Version RangeStatus
beaugunderson ip-address < 10.7.1 affected
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I. Basic Information for CVE-2026-101911

Vulnerability Information
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Vulnerability Title
ip-address: Address6 builds a parse diagnostic proportional to the input with no length bound, allowing a single long string to stall or crash the process
Source: CVE Program / CVE List V5
Vulnerability Description
ip-address is a library for parsing and manipulating IPv4 and IPv6 addresses in JavaScript. Prior to 10.7.1, the Address6 constructor, Address6.isValid, and parse code in src/ipv6.ts accept unbounded strings and expand invalid characters through RE_BAD_CHARACTERS into large diagnostics. Material impact occurs only when an application accepts a very large attacker-controlled field and passes it to Address6 parsing without an earlier length bound. Common URL and header limits, and common body-parser defaults, generally constrain the effect; common defaults typically exclude 32 MiB fields. Megabyte-scale fields can cause a synchronous stall and high transient memory use, approximately 16 MiB can trigger an invalid string length exception, and process termination occurs at approximately 32 MiB. The affected entry points include Address6.isValid and construction paths that reach parse. This issue is fixed in version 10.7.1.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
未加控制的资源消耗(资源穷尽)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
beaugunderson ip-address < 10.7.1 -

II. Public POCs for CVE-2026-101911

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III. Intelligence Information for CVE-2026-101911

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Other References for CVE-2026-101911 (4)

Same Patch Batch · beaugunderson · 2026-09-28 · 4 CVEs total

CVE-2026-101910 6.9 MEDIUM ip-address: no classifier recognizes the NAT64 local-use range 64:ff9b:1::/48, allowing SS
CVE-2026-101913 6.3 MEDIUM ip-address: Address6.isLinkLocal() recognizes fe80::/64 rather than fe80::/10, allowing SS
CVE-2026-101912 6.3 MEDIUM ip-address: isInSubnet() and isHostInSubnet() compare addresses of different families as i

IV. Related Vulnerabilities

Same product: ip-address
Same vendor: beaugunderson
Same weakness: CWE-400

V. Comments for CVE-2026-101911

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